Abstract
Control of hydraulic drives using more than two pressure lines is studied as a means for improving energy efficiency, e.g. for excavators or for hydraulic power take off from sea wave power plant systems. All combinations of switching n different pressure levels to a differential cylinder provide in general 2.n force levels. In order to facilitate forces between these levels for a proper motion control, this digital concept was combined with throttling control. This, of course, causes energetic losses. In this paper a combination of multi-pressure and switched inertance control is presented and studied theoretically by mathematical modelling and simulation. The integration of the switched inertance part requires only a pipeline as an inertance element and a so called “Mikota resonator” flow and pressure ripple suppression. Simulation results show a good motion control performance and an efficiency gain over intermediate force adjustment by throttling in load lifting.
| Original language | English |
|---|---|
| Pages (from-to) | 5775-5782 |
| Number of pages | 8 |
| Journal | MM Science Journal |
| DOIs | |
| Publication status | Published - Oct 2022 |
Fields of science
- 203 Mechanical Engineering
- 203015 Mechatronics
